文献类型：期刊文献

中文题名：农药阿维菌素在水中的光解动态及机理

英文题名：The photolysis dynamics and mechanism of pesticide Abamectin in water

作者：张卫[1];林匡飞[1];虞云龙[2];刘莉莉[1];张巍[1]

机构：[1]华东理工大学资源与环境工程学院//国家环境保护化工过程环境风险评价与控制重点实验室,上海200237;[2]浙江大学农药环境毒理研究所,杭州310029

年份：2009

卷号：18

期号：5

起止页码：1679

中文期刊名：生态环境学报

外文期刊名：Ecology and Environmental Sciences

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金项目(40901148);国家高技术研究发展计划(2008AA06A406;2007AA06Z331);上海市科委纳米专项(0752nm025);上海市重点学科项目(B506)

语种：中文

中文关键词：阿维菌素;农药;光解动态;降解途径;光解机理

外文关键词：Abamectin pesticide photolysis dynamics degradation path photolysis mechanism

摘要：为了科学评价农药阿维菌素的环境安全性,采用室内模拟方法研究了其在水环境中的光解动态,考察了波长、光强和添加物质等对阿维菌素光降解的影响,进而利用LC/MS鉴定了其主要降解产物,并对降解机理进行了初步探讨。结果表明:紫外灯辐射波长对阿维菌素的光解速率影响较大,波长越短,越有利于阿维菌素的光降解;模拟太阳光强度越大,阿维菌素的光解速率越快;1%H2O2、0.1%TiO2和10%丙酮作为添加物质都能加快阿维菌素的光解进程;通过分析阿维菌素光解产物的TIC图和质谱图,可能主要有两种代谢产物,分析了其降解途径及机理。
In ordor to evaluate comprehensively environmental risk of pesticide Abamectin,the photolysis dynamics of Abamectin in water was studied. Moreover,the effects of wavelength,intensity of simulative sunshine and different matter appended on the photolysis rate were researched. Finally the photolysis products were identified by LC/MS,and the degradation mechanism was put forward. The results showed that the radiation wavelength of ultraviolet lamp had obvious effect on the photolytic degradation rate,and shorter wavelength was more favorable for the photolytic degradation; When the intensity of simulative sunshine became stronger,the photolytic degradation rate increased; Moreover,the photolytic degradation could be accelerated added by different matter such as 1% H2O2,0.1% TiO2 and 10% acetone; Two possible photolysis products of Abamectin were found by the analysis of TIC and MS chromatogram,and their retention time was 6.201 and 14.344 min,and molecular weight（MW） was 450 and 642 respectively; At last possible pathway of Abamectin photolysis was put forward.